>>65438668No. speaking from experience suicide attempts are usually one of two things. they're either spur of the moment after a cascade of emotionally taxing events culminates with a trigger event.
Or they're long term planned things where a person has bottled things up and secretly planned for a long time how and when to act.
Selen's could be either of these, we don't have enough information to figure out which and we do have enough to suspect it could be either. what we can easily surmise though is that working for nijisanji en this last year has been so horrid it's driven her to suicide.